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Basic and Diluted Earnings Per Share (Tables) | 12 Months Ended
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May. 31, 2015
Earnings Per Share [Abstract] |
Basic and diluted earnings per share | Basic and diluted earnings per share were calculated as follows:
|  | Year ended May 31,
In millions, except per share amounts |  | 2015 |  | 2014 |  | 2013
Basic earnings per share: |  |  |  |  |  |
Net income |  | $ | 674.9 |  |  | $ | 627.5 |  |  | $ | 569.0 |
Weighted-average common shares outstanding |  | 362.9 |  |  | 364.5 |  |  | 363.8 |
Basic earnings per share |  | $ | 1.86 |  |  | $ | 1.72 |  |  | $ | 1.56 |
Diluted earnings per share: |  |  |  |  |  |
Net income |  | $ | 674.9 |  |  | $ | 627.5 |  |  | $ | 569.0 |
Weighted-average common shares outstanding |  | 362.9 |  |  | 364.5 |  |  | 363.8 |
Dilutive effect of common share equivalents |  | 1.7 |  |  | 1.6 |  |  | 0.9 |
Weighted-average common shares outstanding, assuming dilution |  | 364.6 |  |  | 366.1 |  |  | 364.7 |
Diluted earnings per share |  | $ | 1.85 |  |  | $ | 1.71 |  |  | $ | 1.56 |
Weighted-average anti-dilutive common share equivalents |  | 0.3 |  |  | 0.7 |  |  | 6.5 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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